So was out Pokemoning with some friends. I finally hit 99 charmander candy today, and went to transfer the one chamander I had to get 100, which would let me evolve Charmeleon to Charizard (finally!) I click, tap, confirm.......and Charmander starts evolving. I do a double take with a "Wtf?" expression, as somehow, I had hit Evolve, so instead of transferring the Charmander, I evolved it....which took me down to 74 candies....meaning I now need 26 more candies to hit 100 again...meaning I need to do another 78 km, being that hatching them is near impossible, and the little buggers don't spawn in my area.

*Head desks*

I'm sure there is worse that has happened to people, but this was a pretty crappy thing to happen. Going from "I get a Charizard tonight after all my hard work!" to "I get to walk 78 more km after I screwed up!" lol